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　　Two vampire bats are hanging upside down in a cave. One of the bats feels rather hungry. "Let's go and find some blood", he suggests.

　　"I don't think you can get any blood this time of the day", says the other bat. "Well, I want some blood and I want it now!", says the first bat and prepares to take off. "Are you coming or what?"

　　"Don't be stupid, you'll just waste your time", says the second bat. So the first bat flies anyway. After a few minutes he is back with blood smeared all over his face.

　　"Where did you manage to find blood this time of the day?", asks the second bat. "Well, do you see that tree out there?", says the first bat and points at a tree outside the cave, "Do you see that tree?"

　　"Yes", says the second bat, "of course I see it".

　　"Well, I didn't", replies the first.

Key  word：

hanging upside down　倒掛

vampire  bat　（n.）吸血蝙蝠

smear　（v.）塗、抹        click 發音  

＊因為蝙蝠在黑暗中才看得清楚，所以只有留在黑洞裡的那隻看得見外面那棵樹。